What are the main differences between general machine parts and special machine parts?
They have a wide range, like some national standard parts, nuts, bolts, gaskets, retaining rings, etc.. They are suitable for various occasions, generally preferred, and the special scope of smaller, for example, due to a number of conditions, or in order to improve the performance of products, manufacturers to design some non-standard parts based on the national standard, these parts will be more suitable for some specific products.
These parts are relatively low in applicability and apply only to one or several particular products. Like some long hole to be connected with a long bolt, like 10mm hole, length 80mm, and the length of the bolt GB's diameter is too large, the diameter of the bolt length not satisfied enough, as this time you should use M10x80.
General mechanical parts and special mechanical parts are mainly distinguished from one in general and one in private. Popularly interpreted as: "generic" refers to the use of a wide range, such as standard nuts, M3, M6, M8, these are universal. And abroad also has some domestic manufacturers, in order to make their own characteristics, features. Special added two words, so that the applicability of parts to reduce, thus reflecting its unique professionalism.